4mm 3 Core SWA Armoured Cable

£2.22 Ex. VAT £2.66 Inc. VAT
  • Current Rating: 42 Amps
  • Core Colours: Black, Brown & Grey
  • Gland Size: BW20S/CW20S (Indoor/Outdoor)
  • Overall Diameter: 15.3mm
Bulk Savings Available
Qty Price
0 - 53 £2.22 Ex. VAT £2.66 Inc. VAT
54 - 67 £2.34 Ex. VAT£2.81 Inc. VAT
68 - 134 £2.17 Ex. VAT£2.60 Inc. VAT
135+ £2.12 Ex. VAT£2.54 Inc. VAT

Per Metre

This product is sold by the length. Simply select the number of metres you'd like to purchase.

4mm x 3 Core Armoured Cable is a form of SWA Armoured Cable that is commonly used for mains electrical supply.

If you’re looking to terminate this cable into a junction box or device, you’ll need a CW20 outdoor gland pack or BW20 indoor gland pack. Also, if you need to attach this cable to a wall or structure, you’ll require CC7 cable cleats.

With a current rating of 42 amps, you can use this cable for a variety of applications, including:

  • Sockets & Switches in a shed or outhouse
  • External Pond Switches & Lighting circuits
  • Electric Gates
  • Security Lighting

If you need to asses what size cable it is you require, please use our Armoured Cable Calculator.

PLEASE NOTE; this is an approximation so if you don’t know what cable size it is you require, please contact a qualified electrician so they can confirm.

Specifications for 4mm 3 Core Armoured Cable

  • Overall Diameter: 15.3mm
  • Current rating : 42 Amp
  • Core identification: 3 core (Brown, Black & Grey)
  • Bedding: PVC
  • Sheath/Jacket: PVC
  • Insulation: XLPE
  • Colour: Black
  • Conductors: Stranded Copper
  • Armour: SWA (Steel Wire Armour)
  • Voltage: 600/1000v
  • Operating temperature: Maximum 90°C, minimum bending 0°C
  • British Standards: BS 5467

Delivery Information

Fast delivery is available to all mainland UK addresses (excludes highlands and islands). Our standard service is provided by DX so if you include a mobile number and email address on your order, you’ll receive delivery notifications including your 2 hour delivery slot on the day of delivery.
If you require a large amount of cable or accessories, please give our sales team a call on 01244 288138 as further discounts may be had on large orders.

** EVAL; 22/05/24 **

Additional information

Weight 0.4500 kg

Primarily found within powered networks and providing mains electricity to powered devices.

Approx overall diameter (approximate size)


Approx weight per meter


Armour / Protection

Steel Wire



BS Number





Plain Annealed Stranded Copper

Core identification

Brown, Black & Grey

Current Rating



4mm 3 Core Armoured Cable
4mm 3 Core Armoured Cable is a form of electrical cable that has the ability to supply mains electrical power to devices and networks. The cable also has more domestic uses such as being used to supply mains electricity to devices such as outdoor buildings, for example, garden sheds or out-houses, as well as being suitable for outdoor lighting circuits such as patio and decking lights.The cable construction is identified by plain annealed stranded copper being used for the conductors/cores, PVC (Polyvinyl Chloride) being used for the bedding and sheathing, cross-linked polyethylene being used for the insulation and steel wire being used for the armour. The cable is made to the British Standard of BS5467 and is BASEC Approved. Due to the steel wire armour that is within the cable protecting the insulating layers beneath, it is also used to give the cable higher pulling loads, meaning it can take the strain of being dispensed from cable drums when delivered to a building/construction site etc. The steel wire armour can also be used as a CPC (Circuit Protective Conductor) or 'natural earth' meaning that the armour itself will earth the cable.
Delivery Information
ArmouredCable.net stock & supply a large and diverse range of Armoured Cable, including sizes ranging from 1.5mm all the way up to 300mm, available with a variety of core counts. If there is a specific size or type that you are looking for but cannot see among the range we have on here, please feel free to give our sales team a call on 01244 288138, who will be happy to provide further information and assistance. ArmouredCable.net is based on Zone 1 of Deeside Industrial Park near Chester, so if you'd prefer to pick up the items you require as opposed to having them delivered, please feel free to do so as all pick ups are welcome. 4mm 3 Core Armoured Cable available for the best prices online with fast, free delivery on orders over £100 excluding VAT. A delivery charge of £5.95 will be applied to orders that are under that amount.


Cross-Linked Polyethylene (XLPE)

Operating temperature

90°C Maximum

Product Code

6943X 4mm

Sheath / Jacket


Number of cores / size of cable



BASEC Approved; BS5467 Thermosetting Insulated



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